Look to me like vintage glass fly catcher thingies
I've looked more closely at photos and can't really tell whether yours have openings in the bottom center (which would need to be there if they were fly catchers)
I agree…..I just can’t figure out why the bottom of the jar goes up into the jar itself. I believe they are for liquid….they are certainly unique
The raised part at the bottom is called the punt.
"Glassblowers used to create punts to push the seam of a bottle up, allowing the bottle to stand upright while preventing glass at the bottom of the bottle from sticking out and cutting people."
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